Patent US3033845A successfully refreshed from Google Patents.
US3033845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of chlorinating polyethylene
Assignee: EIDP Inc
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Filing: 1960-04-07
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Granted: 1962-05-08
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Expires: 1980-04-07
Abstract
No abstract record available.
Inventors
- 👤 Scott John Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:06
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/18; C08F8/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE PROCESS OF CHLORINATING POLYETHYLENE TO GIVE A HOMOGENEOUS PRODUCT WHEREIN SAID POLYETHYLENE IS SUSPENDED IN FINELY DIVIDED FORM IN A STREAM OF CHLORINE, FOLLOWED BY INTRODUCING AND REACTING, WITH THE CHLORINE COMPONENT OF SAID POLYETHYLENE-CHLORING SYSTEM, A REACTANT TAKEN FROM THE GROUP CONSISTING OF HYDROGEN AND A SATURATED, ALIPHATIC NORMALLY GASEOUS HYDROCARBON, SAID REACTANT BEING PRESENT IN AN AMOUNT SUFFICIENT TO RAISE THE TEMPERATURE OF THE REACTION SYSTEM TO A TEMPERATURE WITHIN THE RANGE OF 150-250*C., AND, SUFFICIENT CHLORINE BEING PRESENT AFTER REACTION WITH SAID REACTANT TO CHLORINATE SAID POLYETHYLENE, FOLLOWED BY CHLORINATING SAID POLYETHYLENE UNTIL A CHLORINATED POLYETHYLENE CONTAINING FROM 15% TO 60% CHLORINE IS PRODUCED.
Claim 2
Dependent Claim
108 words
THE PROCESS OF CHLORINATING POLYETHYLENE TO GIVE A HOMOGENEOUS PRODUCT WHEREIN SAID POLYETHYLENE IS SUSPENDED IN FINELY DIVIDED FORM IN A STREAM OF CHLORINE, FOLLOWED BY INTRODUCING AND REACTING, WITH THE CHLORINE COMPONENT OF SAID POLYETHYLENE-CHLORING SYSTEM, A REACTANT TAKEN FROM THE GROUP CONSISTING OF HYDROGEN AND A SATURATED, ALIPHATIC NORMALLY GASEOUS HYDROCARBON, SAID REACTANT BEING PRESENT IN AN AMOUNT SUFFICIENT TO RAISE THE TEMPERATURE OF THE REACTION SYSTEM TO A TEMPERATURE WITHIN THE RANGE OF 150-250*C., AND, SUFFICIENT CHLORINE BEING PRESENT AFTER REACTION WITH SAID REACTANT TO CHLORINATE SAID POLYETHYLENE, FOLLOWED BY CHLORINATING SAID POLYETHYLENE UNTIL A CHLORINATED POLYETHYLENE CONTAINING FROM 15% TO 60% CHLORINE IS PRODUCED.
References Cited (Backward Citations)
US2928819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |